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Full text of "Text Book Of Mechanical Engineering"

6io

Carnot's Perfect Engine.

i 2. Second operation: The expansion is continued, without supply
of heat, by placing the cylinder on the non-conducting cover; and
the adiabatic curve 2 3 is traced, the temperature falling from
rx to r2, on account of work done by the gas. Third operation:
Compressing the gas at constant temperature r2, we place the

^s^!sspy*d^^^

cylinder on the cold body, to receive such heat as must be
rejected; and the curve obtained is the isothermal 3 4. Fourth
operation: Finally, place the cylinder on the nonconducting
plate and compress along the adiabatic 41; the substance is then
returned to its original condition and temperature TV

During these operations the work done by the gas is shewn
by diagram F, and that on the gas by diagram o, their difference